testing open ports

[Peter L. Peres]

This won't work. nmap will detect ports with existing servers, not ports
available for service.

I would suggest you look into how passive ftp works for clues on how to
get around this problem.

Peter

On Fri, 28 May 2004, Martin Duclos wrote:

>
> I would suggest you use nmap or nmapfe (for a x gui). You then enter the ip
> of the host you want to scan for open ports. Hope this helps!
>
> Martin
>
>
>
> Hi everyone,
>
> I'm working on a web site that includes streamed rich media files. I need
> a way to test to see which ports the user can access if they're behind a
> firewall. I'm guess that I need to try and send them an object (a picture
> maybe?) on one of the ports I need information about and then see if the
> picture is received or not. This needs to test the user's open ports, not
> the server's though.
>
> There must be some kind of script already written that can do this for me
> (Perl package, maybe?).
>
> Any suggestions would be appreciated,
> emma
>
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> Emma Jane Hogbin
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